Does anyone know if my stock Catalyictic converter will bolt up to my 3' thermal cat back exhaust on my 94ls??...im not sure the flanges will match..i need to go through emissions in a month or 2 and i was just wondering ahead of time...

 

no, Thermal gives you a 3" flange that you're supposed to get welded to your 3" cat. I guess you can weld the flange to your stock cat,t hen it'd bolt up, but that'd kinda be a waste of a flange. You might wanna just swap your stock cat and exhaust back on for emissions.